(B&S) Cant start RMI server on any other port except 1099

[Saheed Adepoju]

Hi all
I am in a dilema, i cant seem to start the RMI server on a port except that of the default RMI port and i dont seem to know why it is doing this?
An insight into the problem will highly be appreciated.Thanks.

[Jeroen T Wenting]

How are you trying to start the RMI registry?

[Saheed Adepoju]

Hi all
Thanks for your reply. There is a RegContractor class that has the following method signature declared as thus:

public static void register(int port,String dbname) throws RemoteException{
        try{
 
            java.rmi.registry.LocateRegistry.createRegistry(port);
 
            //make an instance of the Data class
            ContractorDataImpl contractordata = new ContractorDataImpl(dbname);
 
            //register
            Naming.rebind("ContractorDatabase",contractordata);
 

        }catch(Exception e){
            log.severe(e.toString());
        }
 
    }
 

And that is how i start the RMI registry. Thanks.I await your input.

[Jeroen T Wenting]

That looks fine, though you may want to take into account the possibility that the registry already exists and use any running registry if available.

[Saheed Adepoju]

Hi
I dont seem to understand your explanation though. I tried it on a friend's computer and it still refuses connection on any other port other than 1099. Could you please be more precised in your explanations? Thanks alot!

[Oricio Ocle]

Hello Saheed,
Take a look to Naming class source code:

    /** 
     * Rebinds the specified name to a new remote object. Any existing
     * binding for the name is replaced.
     *
     * @param name a name in URL format (without the scheme component)
     * @param obj new remote object to associate with the name
     * @exception MalformedURLException if the name is not an appropriately
     *  formatted URL
     * @exception RemoteException if registry could not be contacted
     * @exception AccessException if this operation is not permitted (if
     * originating from a non-local host, for example)
     * @since JDK1.1
     */
   [B] public static void rebind(String name, Remote obj)
throws RemoteException, java.net.MalformedURLException[/B]    {
ParsedNamingURL parsed = parseURL(name);
Registry registry = [B]getRegistry[/B](parsed);
 
if (obj == null)
    throw new NullPointerException("cannot bind to null");
 
registry.rebind(parsed.name, obj);
    }  

    /**
     * Returns a registry reference obtained from information in the URL.
     */
    private static Registry getRegistry(ParsedNamingURL parsed)
throws RemoteException {
return LocateRegistry.getRegistry(parsed.host, [B]parsed.port[/B]);
    }

If no port is parsed, is set to:

port = Registry.REGISTRY_PORT;

As you can see in java.rmi.registry.LocateRegistry.getRegistry(String host, int port,RMIClientSocketFactory csf).
REgards